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Part Number: 100099-00 Rev 02 1
Mini-Gigabit Interface Connector
(Mini-GBIC) Installation Note
You can add and remove mini-GBICs from your Extreme Networks switch without powering
off the system. There are two types of mini-GBIC interfaces: the LX mini-GBIC, which conforms
to the 1000BASE-LX standard, and the SX mini-GBIC, which conforms to the 1000BASE-SX
standard. The mini-GBIC connector, which is shown in Figure 1, is the same for both types of
mini-GBIC interfaces.
Figure 1: Mini-GBIC module
Mini-GBICs are a Class 1 laser device. Use only Extreme-approved devices.
Remove the LC fiber-optic connector from the mini-GBIC prior to removing the
mini-GBIC from the port.
Mini-GBICs can emit invisible laser radiation. Avoid direct eye exposure to beam.
If you see an amber blinking mini-GBIC port status LED on your Extreme Networks
switch or you receive an error message when you install a non-Extreme-supported
mini-GBIC, you do not have an Extreme-supported mini-GBIC installed in your switch. To
correct this problem, make sure you install an Extreme-supported mini-GBIC into the port
on the switch.
To remove the mini-GBIC connector, gently push in the plastic tab at the bottom of the
connector and pull the mini-GBIC out of the port on the switch.
To insert a mini-GBIC connector:
1 Holding the mini-GBIC by its sides, insert the mini-GBIC into the port on the switch.
2 Slide the mini-GBIC into the port, until you hear it click.
XM_032
Mini-Gigabit Interface Connector (Mini-GBIC) Installation Note 2
LX Mini-GBIC Specifications
Table 1 describes the specifications for the LX mini-GBIC interface.
Total optical system budget for the LX mini-GBIC is 13.5 dBm. Measure cable plant losses with
a 1310 nm light source and verify this to be within budget. When calculating the maximum
distance attainable using optical cable with a specified loss per kilometer (for example 0.25
dB/km) Extreme Networks recommends that 3 dBm of the total budget be reserved for losses
induced by cable splices/connectors and operating margin. Thus, 10.5 dBm remains available
for cable induced attenuation. There is no minimum attenuation or minimum cable length
restriction.
SX Mini-GBIC Specifications
Table 2 describes the specifications for the SX mini-GBIC interface.
Total optical system budget for the SX mini-GBIC is 11.5 dBm. Extreme Networks recommends
that 3 dBm of the total budget be reserved for losses induced by cable splices/connectors and
operating margin. While 8.5 dBm remains available for cable induced attenuation, the
1000Base-SX standard specifies supported distances of 275 meters over 62.5 micron multimode
fiber and 550 meters over 50 micron multimode fiber. There is no minimum attenuation or
minimum cable length restriction.
Table 1: LX Mini-GBIC Specifications
Parameter Minimum Typical Maximum
Transceiver
Optical output power -9.5 dBm -3 dBm
Center wavelength 1275 nm 1310 nm 1355 nm
Receiver
Optical input power sensitivity -23 dBm
Optical input power maximum -3 dBm
Operating wavelength 1270 nm 1355 nm
General
Total system budget 13.5 dBm
Table 2: SX Mini-GBIC Specifications
Parameter Minimum Typical Maximum
Transceiver
Optical output power -9.5 dBm -4 dBm
Center wavelength 830 nm 850 nm 860 nm
Receiver
Optical input power sensitivity -21 dBm
Optical input power maximum -4 dBm
Operating wavelength 830 nm 860 nm
General
Total system budget 11.5 dBm
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